HP Virtual Connect 4Gb Fibre Channel Module for c-Class BladeSystem - Manual (Page 144)

Virtual Connect fabrics 144
• You can attach up to four HP 3PAR storage systems directly to the VC FlexFabric module using a single
VC SAN fabric. This limitation is due to the number of FC-capable uplink ports available on the
FlexFabric module.
Mixed FabricAttach and DirectAttach VC SAN fabrics
Mixing FabricAttach and DirectAttach VC SAN fabrics is fully supported in the same Virtual Connect domain.
This scenario can be useful if you need to attach additional storage systems that are not supported today with
the DirectAttach fabrics.
To mix FabricAttach and DirectAttach fabrics, you must create two different VC SAN fabrics because a VC
SAN fabric can only contain uplink ports of one type.